Elysia flava Verrill 1901
Description
Elysia flava Verrill, 1901
(Figure 6 (g))
Material examined
Cala d’Aiguafreda, Begur (Spain), 41°57 ʹ 49”N, 3°13 ʹ 41”E, 30 July 2015, 2.3 m depth, 6 spcs, adults, L = 5–12 mm; Roqueo de los 14, La Herradura (Spain), 36°43 ʹ 13.2”N, 3°43 ʹ 43.5”W, 18 September 2016, 1.6 m depth, 3 spcs, adults, L = 7–10 mm.
External morphology
Body elongate, narrow, background colour green/yellow, dark green in parapodia, margin of parapodia wavy, white. Rhinophores short, apex white, with two white spots between eyes.
Ecology
Specimens found in July mating on unidentified algae. This species is strictly nocturnal, found during the day under rocks and at night on algae, especially green filamentous algae such as Cladophora.
Distribution
Caribbean Sea (GBIF.org 2021); Madeira (Cervera et al. 2004); Azores (Malaquias et al. 2009); Greece and Adriatic Sea (Ballesteros et al. 2012–2021); Spain: Canary Islands, Levantine coast, Catalonia (Cervera et al. 2004; this study), Andalucía (this study).
Remarks
This species is differentiated from sympatric Elysia by the yellowish colour of the body as well as the green dark colour in the parapodia (Thompson and Jaklin 1988).
Superorder SIPHONARIMORPHA
Family SIPHONARIIDAE Gray, 1827
Genus Williamia Monterosato, 1884
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Event date
- 2015-07-30
- Family
- Plakobranchidae
- Genus
- Elysia
- Kingdom
- Animalia
- Order
- Runcinida
- Phylum
- Mollusca
- Scientific name authorship
- Verrill
- Species
- flava
- Taxon rank
- species
- Verbatim event date
- 2015-07-30/2016-09-18
- Taxonomic concept label
- Elysia flava Verrill, 1901 sec. Salvador, Fernández-Vilert & Moles, 2022
References
- Cervera JL, Calado G, Gavaia C, Malaquias MAE, Templado J, Ballesteros M, Megina C, Garcia-Gomez JC. 2004. An annotated and updated checklist of the opisthobranchs (Mollusca: Gastropoda) from Spain and Portugal (including Islands and archipelagos). Boletin-Instituto Espanol de Oceanografia. 20: 5 - 111.
- Malaquias MAE, Calado G, Padula V, Villani G, Cervera JL. 2009. Molluscan diversity in the North Atlantic Ocean: new records of opisthobranch gastropods from the Archipelago of the Azores. Mar Biodivers Rec. 2: 1 - 9. doi: 10.1017 / S 175526720800016 X.
- Thompson TE, Jaklin A. 1988. Eastern Mediterranean Opisthobranchia: elysiidae (Sacoglossa = Ascoglossa). J Molluscan Stud. 54: 59 - 69. doi: 10.1093 / mollus / 54.1.59.